Facebook vows 'consequences' for extreme porn scammers

Updated Facebook officials have tracked down the scammers responsible for deluging the social network with images depicting bestiality, self-mutilation and other depravity and is vowing to seek swift justice.

As previously reported, Facebook has blamed the torrent of extreme smut on a "self-XSS vulnerability in the browser" that tricked users into pasting and executing malicious javascript in their address bars and caused them to unknowingly share this offensive content. Many victims have reported that the highly offensive content is visible to others but not to the user whose account was used to spread it.

According to reports published by PCMag.com and ZDNet, Facebook officials have also figured out who is behind the attack. Both reports cited the same statement from a Facebook PR representative that says:

"In addition to the engineering teams that build tools to block spam we also have a dedicated enforcement team that has already identified those responsible and is working with our legal team to ensure appropriate consequences follow."

Neither report divulged the identity of the scammers or said if law enforcement agencies have been called in to investigate.

When The Register asked Facebook representatives for confirmation, one of them responded with a statement that read: "We've identified the responsible parties and are pursuing legal action at this time."

Facebook has yet to elaborate on key details of the ongoing attack. It's still unknown if the cross-site scripting vulnerability is unique to a particular browser and how many of its 800 million users have been affected.

Security firm Zscaler has a primer on self-inflicted JavaScript injection here. In the post, researcher Mike Geide said the most common ploy in the ongoing deluge comes from malicious Facebook groups that ask users to join and then enter JavaScript into their URL bar.

The scripts contain obfuscated code that generates invite messages to all of a user's Facebook friends and includes an invisible link to hxxp://aagmphxa.facebook.joyent.us/goog/index1.php. The URL no longer works. ®

This post was updated to add comment from Facebook and details from Zscaler.